A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for preparing cement iron correction material by utilizing fly ash magnetic separation process
The invention discloses a method for preparing a cement iron correction material by using a fly ash magnetic separation process, belongs to the technical field of comprehensive utilization of industrial wastes, solves the problem of high cost of a cement iron material on one hand, provides a new method for comprehensive utilization of fly ash on the other hand, and develops a new utilization way for solid waste resources. The solution is as follows: a proper slurry concentration is determined by adopting wet selection; two stages of magnetic separation are designed, iron powder in the fly ash is enriched in the first stage, and the enriched iron powder is finely selected in the second stage; and the grinding time is controlled to be determined, and after the first-stage magnetic separation is finished, the iron powder is subjected to wet grinding, so that impurities such as quartz and mullite can be effectively removed. The high-quality cement iron correction material is produced from the fly ash, the TFe grade can reach 25%-30%, the cement iron correction material is an ideal iron correction material for cement, and compared with traditional iron correction materials using iron ore powder, steel slag and the like, the cement iron correction material has the advantages of being high in grade, few in impurities, high in stability, low in cost and the like.
一种利用粉煤灰磁选工艺制备水泥铁质校正料的方法，属于工业废弃物综合利用技术领域，一方面解决水泥铁料成本高的问题，另一方面为粉煤灰的综合利用提供了新的方法，为固废资源开发了新的利用途径。解决方案为：采用湿法选取，确定合适的浆体浓度；设计两段磁选，第一段将粉煤灰中的铁粉进行富集，第二段对富集后的铁粉进行精选；控制研磨时间的确定，在第一段磁选结束后，对铁粉进行湿磨，能够有效地去除石英、莫来石等杂质。本发明利用粉煤灰生产高品质的水泥铁质校正料，TFe品位能够达到25%~30%，是水泥的理想铁质校正料，相较于使用铁矿粉、钢渣等传统的铁质校正料来说，具有品位高、杂质少、安定性强、成本低廉的等优点。
Method for preparing cement iron correction material by utilizing fly ash magnetic separation process
The invention discloses a method for preparing a cement iron correction material by using a fly ash magnetic separation process, belongs to the technical field of comprehensive utilization of industrial wastes, solves the problem of high cost of a cement iron material on one hand, provides a new method for comprehensive utilization of fly ash on the other hand, and develops a new utilization way for solid waste resources. The solution is as follows: a proper slurry concentration is determined by adopting wet selection; two stages of magnetic separation are designed, iron powder in the fly ash is enriched in the first stage, and the enriched iron powder is finely selected in the second stage; and the grinding time is controlled to be determined, and after the first-stage magnetic separation is finished, the iron powder is subjected to wet grinding, so that impurities such as quartz and mullite can be effectively removed. The high-quality cement iron correction material is produced from the fly ash, the TFe grade can reach 25%-30%, the cement iron correction material is an ideal iron correction material for cement, and compared with traditional iron correction materials using iron ore powder, steel slag and the like, the cement iron correction material has the advantages of being high in grade, few in impurities, high in stability, low in cost and the like.
一种利用粉煤灰磁选工艺制备水泥铁质校正料的方法，属于工业废弃物综合利用技术领域，一方面解决水泥铁料成本高的问题，另一方面为粉煤灰的综合利用提供了新的方法，为固废资源开发了新的利用途径。解决方案为：采用湿法选取，确定合适的浆体浓度；设计两段磁选，第一段将粉煤灰中的铁粉进行富集，第二段对富集后的铁粉进行精选；控制研磨时间的确定，在第一段磁选结束后，对铁粉进行湿磨，能够有效地去除石英、莫来石等杂质。本发明利用粉煤灰生产高品质的水泥铁质校正料，TFe品位能够达到25%~30%，是水泥的理想铁质校正料，相较于使用铁矿粉、钢渣等传统的铁质校正料来说，具有品位高、杂质少、安定性强、成本低廉的等优点。
Method for preparing cement iron correction material by utilizing fly ash magnetic separation process
一种利用粉煤灰磁选工艺制备水泥铁质校正料的方法
QIAO BO (author) / ZHANG MEIXIA (author) / YANG CHAOGANG (author) / LIU PENG (author) / FAN HUIJUAN (author) / ZHANG HUIYUE (author) / CAO PENGFEI (author) / WANG ZHENG (author)
2023-02-28
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Method for preparing silicate cement siliceous correction raw material from iron tailings
| European Patent Office | 2021
Process for preparing cement-based cementing material by utilizing sulfur-containing tailings
| European Patent Office | 2024
Process method for preparing cement product by utilizing desulfurized manganese slag
| European Patent Office | 2021